.imgbei {
    width: 99%;
}


.beier {
    width: 100%;
    height: 20px;
    /* background: pink; */
}

.dingspan {
    float: left;
    margin-left: 12px;
}

.beispan {
    float: right;
    margin-right: 15px;
}


.sediv {
    width: 100%;
    height: 150px;
    /* background: pink; */
    margin-top: 10px;
}

.sediv button {
    width: 30px;
    height: 30px;
    margin-left: 14px;
    margin-top: 10px;
    border: none;
    border-radius: 3px;
}